EP3765664B1 - Method for operating a washing machine, and washing machine - Google Patents

Method for operating a washing machine, and washing machine Download PDF

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Publication number
EP3765664B1
EP3765664B1 EP19708446.0A EP19708446A EP3765664B1 EP 3765664 B1 EP3765664 B1 EP 3765664B1 EP 19708446 A EP19708446 A EP 19708446A EP 3765664 B1 EP3765664 B1 EP 3765664B1
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EP
European Patent Office
Prior art keywords
door
sealing ring
water
inspection glass
door sealing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP19708446.0A
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German (de)
French (fr)
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EP3765664A1 (en
Inventor
Annette Bensmann
Dirk Sieding
Marcel Zielke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Miele und Cie KG
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Miele und Cie KG
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Publication date
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Priority to PL19708446T priority Critical patent/PL3765664T3/en
Publication of EP3765664A1 publication Critical patent/EP3765664A1/en
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
    • D06F35/005—Methods for washing, rinsing or spin-drying
    • D06F35/008—Methods for washing, rinsing or spin-drying for disinfecting the tub or the drum
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • D06F37/266—Gaskets mounted between tub and casing around the loading opening
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/04—Quantity, e.g. weight or variation of weight
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/20—Washing liquid condition, e.g. turbidity
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/52—Changing sequence of operational steps; Carrying out additional operational steps; Modifying operational steps, e.g. by extending duration of steps
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/088—Liquid supply arrangements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/12—Casings; Tubs
    • D06F39/14—Doors or covers; Securing means therefor

Definitions

  • the invention relates to a method for operating a washing machine and a washing machine.
  • the invention relates to a method for operating a washing machine with a suds container arranged in a housing, in which a drum is rotatably mounted, a loading opening arranged on the front of the housing, which can be closed with a door having a door inspection glass, a suds container located between the housing and the Suds container to the loading opening extending door seal and a control and or regulating device and a correspondingly trained washing machine.
  • the method includes carrying out a selected washing program, which includes a rinsing phase and in which, following the rinsing phase, water is applied to the door sight glass and the door sealing ring in order to rinse the door sight glass and the door sealing ring.
  • a selected washing program which includes a rinsing phase and in which, following the rinsing phase, water is applied to the door sight glass and the door sealing ring in order to rinse the door sight glass and the door sealing ring.
  • a selected washing program which includes a rinsing phase and in which, following the rinsing phase, water is applied to the door sight glass and the door sealing ring in order to rinse the door sight glass and the door sealing ring.
  • Another washing machine that performs a rinsing and drying process to wash the door sight glass and the door seal of the washing machine door is from the document CN 107 604 585 A known.
  • the invention therefore faces the problem of providing a method and a washing machine with which foam in front of the door inspection glass and/or in the inner drum can be flushed away independently of the load quantity of a washing program. According to the invention, this problem is solved by a method having the features of patent claim 1 and a washing machine having the features of patent claim 10 .
  • the following step is provided in the method: Carrying out a spin cycle after the rinsing phase and before applying the water to the door sight glass and the door sealing ring with a maximum speed depending on the selected washing program.
  • the step according to the invention pushes the laundry out of the area of the door inspection glass and the door sealing ring, depending on the selected washing program, so that the water applied to the door inspection glass and the door sealing ring can touch the foam and is not sucked up by the laundry in the drum.
  • the method has the following steps: determining whether the wash program has a threshold load that exceeds a predetermined maximum load and/or is a voluminous laundry wash program and carrying out the spin cycle after the rinsing phase and before applying the water on the door sight glass and the door sealing ring at a maximum speed depending on whether the wash program has the threshold load amount that exceeds the predetermined maximum load amount and/or is the bulky laundry wash program.
  • the predetermined maximum load is a load of 2 kg.
  • the maximum speed is preferably 600 min -1, more preferably 550 min -1. It has been found that it is only necessary to carry out the spin cycle at the maximum speed if the wash program has a threshold load that exceeds the predetermined maximum load and/or is a bulky laundry wash program.
  • a bulky laundry washing program is a washing program for washing bulky laundry such as pillows, down and/or terry goods.
  • the threshold loading quantity is a maximum permissible loading quantity for each individual wash program.
  • the threshold loading quantity can vary from washing program to washing program and is assigned to each washing program and stored in the washing machine.
  • the spin process is preferably carried out at the maximum speed and then water is applied to the door inspection glass and/or the door sealing ring in order to Rinse the door sight glass and the door sealing ring.
  • the spin cycle is carried out at maximum speed between the rinsing phase and the application of the water to the door sight glass and the door sealing ring.
  • the purpose of the spinning process after the rinsing phase and before applying the water to the door sight glass and the door sealing ring at a maximum speed is to displace the laundry from the door sight glass as far as possible and to expose the foam, which usually does not change with the spin cycle. After exposing the foam, the door sight glass and the door sealing ring are rinsed by applying water.
  • the door sight glass and door seal ring are flushed with water, so the foam that collects there is washed away without the need for additional agents. Rather, already existing components of the washing machine can be used to remove the foam from the door sight glass and the door sealing ring.
  • the application of water preferably includes spraying or splattering at least part of the door sight glass and the door sealing ring.
  • the water can be applied to one or more points of the door sight glass and the door sealing ring.
  • the water is applied to the door sight glass and the door sealing ring by flushing the door sight glass. This allows the water to be applied directly to the door sight glass or door seal.
  • the door sight glass flushing device has a nozzle that squirts or sprays the water onto the door sight glass and the door sealing ring.
  • the method is preferably carried out as follows in this respect: The method preferably has the following steps: sensing a load of laundry in the drum in an initial phase of the washing program and linear or stepwise setting of the maximum speed during the spinning process as a function of the sensed load . Alternatively or additionally, the method has the following steps: sensing foam in the drum at the end and/or following the rinsing phase and linear or gradual adjustment of the maximum speed during the spin process depending on the foam sensing. This means that the centrifugal process can be regulated and/or controlled as a function of the sensed load quantity and/or the foam sense. In the case of a relatively low sensed load quantity, the maximum speed of the spinning process is preferably set linearly.
  • the speed of the spinning process is preferably increased in stages to the maximum speed of the spinning process.
  • the maximum speed is preferably 600 min -1, more preferably 550 min -1. At this maximum speed, it is avoided that more foam is whipped up, and the laundry is also pressed against the drum wall, but does not collapse again when the drum stops.
  • a foam sensing is for example from the DE19839896A1 or DE4104151A1 known.
  • the drum is stationary while the water is applied to the door sight glass and/or door seal to rinse the door sight glass and door seal.
  • a speed of rotation of the drum during the application of the water to the door sight glass and the door sealing ring is therefore 0 min -1 . That is, the drum is not rotated during the application of water to the door sight glass and door seal. This allows the applied water to carry the foam towards the drain.
  • a drainage device for draining the water out of the tub is permanently activated. This removes the water and foam from the tub and prevents it from contaminating the laundry.
  • the drainage device for draining the water out of the tub is activated if a pressure in the tub is sensed that is greater than a predetermined threshold.
  • the predetermined threshold is preferably chosen such that the sensed pressure corresponds to no higher than a water level that is at a bottom edge of the drum. This is intended to prevent the foam from being able to rise again into an area that is visible to a user of the washing machine, such as the door inspection glass.
  • an amount of water applied to the door sight glass and the door seal to flush the door sight glass and the door seal corresponds to a predetermined amount of water carried out by the washing program depends. This may be necessary if a specific total amount of water in the washing program should not be exceeded.
  • an amount of water applied to the door sight glass and door sealing ring to rinse the door sight glass and door sealing ring depends on the sensed load amount, sensed foam and/or an amount of an automatically dosed detergent that is used during the Washing program is fed to the tub.
  • the amount of water applied to the door sight glass and the door sealing ring is therefore adapted to the washing process, to an actual amount of foam and/or to automatic detergent dosing. This ensures that the foam can actually be flushed away and that an optimal amount of water is used, ie neither too much nor too little water is used for rinsing.
  • the selected wash program preferably has the following sequence: First, the load quantity is determined in a detection phase using a mass inertia method or a weight measurement. A washing phase is then carried out with supplying water and optionally detergent into the tub, heating the water to a predetermined washing temperature, washing the laundry and pumping the water out of the tub using the drain device. A rinsing phase is then carried out with a rinsing section or a plurality of rinsing sections, each comprising feeding water into the tub and pumping the water out of the tub by means of the drain device. The spin cycle is then carried out at the maximum speed depending on the wash program selected. Then, application of water to the door sight glass and the door seal ring is performed to rinse them. A final spin phase is then carried out with the laundry being spun until it comes into contact with the drum casing while water is pumped out of the tub using the drain device.
  • the invention also relates to a washing machine with a suds container arranged in a housing, in which a drum is rotatably mounted, a loading opening arranged on the front of the housing, which can be closed with a door having a door inspection glass, a suds container located between the housing and the suds container around the loading opening extending door sealing ring and a regulating or control device which is set up to regulate or control a method according to one or more of the described embodiments.
  • the washing machine preferably has a door sight glass flushing system.
  • the flushing of the door sight glass is preferably provided in and/or on the door sealing ring.
  • the flushing of the door sight glass is a spraying device like a nozzle and/or an opening in a door sealing ring designed as a bellows seal or as an elastic sleeve.
  • the washing machine can be a washing machine used in a private household or commercially.
  • the term "washing machine” preferably includes a washing machine and/or a combination device such as a washer-dryer.
  • step 1 schematically shows a flowchart of a method according to the invention.
  • step 1 a last rinsing section of a rinsing phase of a selected washing program is carried out.
  • step 2 in which the method according to the invention starts.
  • step 3 which includes determining whether the wash program has a threshold load that exceeds a predetermined maximum load, such as 2 kg, and/or is a bulky laundry wash program.
  • step 3 is followed by step 4, which involves performing a spin cycle with a Has a maximum speed of 600 min -1 , and step 4 is followed by a step 5.
  • step 3 If it is determined in step 3 that the washing program has a threshold loading quantity that is less than or equal to the predetermined maximum loading quantity and is a different washing program for each bulky laundry washing program, then step 3 is followed directly by step 5.
  • Step 5 comprises applying water to a door sight glass and a door seal of a washing machine to rinse them, with a drum of the washing machine standing still while the water is applied to the door sight glass and/or the door seal.
  • step 6 which has a final spin.
  • the drum is rotated at a higher speed than in step 4, at which the laundry rests against a casing of the drum and the water from the laundry due to centrifugal force from the fabric from the inside of the drum into the Suds container is thrown through openings in the drum.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Description

Verfahren zum Betreiben einer Waschmaschine und Waschmaschine Die Erfindung betrifft ein Verfahren zum Betreiben einer Waschmaschine und eine Waschmaschine. Insbesondere betrifft die Erfindung ein Verfahren zum Betreiben einer Waschmaschine mit einem in einem Gehäuse angeordneten Laugenbehälter, in dem eine Trommel drehbar gelagert ist, einer frontseitig am Gehäuse angeordneten Beschickungsöffnung, die mit einer ein Türschauglas aufweisenden Tür verschließbar ist, einem sich zwischen dem Gehäuse und dem Laugenbehälter um die Beschickungsöffnung erstreckenden Türdichtring und einer Steuer- und oder Regeleinrichtung sowie eine entsprechend ausgebildete Waschmaschine.The invention relates to a method for operating a washing machine and a washing machine. In particular, the invention relates to a method for operating a washing machine with a suds container arranged in a housing, in which a drum is rotatably mounted, a loading opening arranged on the front of the housing, which can be closed with a door having a door inspection glass, a suds container located between the housing and the Suds container to the loading opening extending door seal and a control and or regulating device and a correspondingly trained washing machine.

Das Verfahren umfasst eine Durchführung eines angewählten Waschprogramms, das eine Spülphase umfasst und bei dem im Anschluss an die Spülphase Wasser auf das Türschauglas und den Türdichtring aufgebracht wird, um das Türschauglas und den Türdichtring zu spülen. Ein derartiges Verfahren ist aus der EP3192914A1 bekannt. Dadurch soll Schaum von dem Türschauglas oder in der Innentrommel weggespült werden. Es hat sich jedoch gezeigt, dass das Verfahren nur bei Waschprogrammen mit geringen Beladungsmengen effektiv ist.The method includes carrying out a selected washing program, which includes a rinsing phase and in which, following the rinsing phase, water is applied to the door sight glass and the door sealing ring in order to rinse the door sight glass and the door sealing ring. Such a method is from EP3192914A1 known. This is to flush foam away from the door sight glass or in the inner drum. However, it has been shown that the process is only effective for washing programs with small loads.

Eine weitere Waschmaschine, die einen Spül- und Trocknungsprozess zum Waschen des Türschauglases und der Türdichtung der Waschmaschinentür durchführt, ist aus dem Dokument CN 107 604 585 A bekannt. Der Erfindung stellt sich somit das Problem, ein Verfahren und eine Waschmaschine bereit zu stellen, mit denen unabhängig von einer Beladungsmenge eines Waschprogramms Schaum vor dem Türschauglas und/oder in der Innentrommel weggespült werden kann. Erfindungsgemäß wird dieses Problem durch ein Verfahren mit den Merkmalen des Patentanspruchs 1 und eine Waschmaschine mit den Merkmalen des Patentanspruchs 10 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den nachfolgenden Unteransprüchen.Another washing machine that performs a rinsing and drying process to wash the door sight glass and the door seal of the washing machine door is from the document CN 107 604 585 A known. The invention therefore faces the problem of providing a method and a washing machine with which foam in front of the door inspection glass and/or in the inner drum can be flushed away independently of the load quantity of a washing program. According to the invention, this problem is solved by a method having the features of patent claim 1 and a washing machine having the features of patent claim 10 . Advantageous refinements and developments of the invention result from the following dependent claims.

Die mit der Erfindung erreichbaren Vorteile bestehen neben einer Schaumeliminierung von dem Türschauglas und/oder in der Innentrommel darin, dass der Schaum unabhängig von einer Beladungsmenge eines Waschprogramms entfernt wird. Wenn es notwendig ist, wird der Schleudervorgang mit der Maximaldrehzahl durchgeführt, um das Türschauglas von anliegender Wäsche zu befreien. Anschließend oder, wenn der Schleudervorgang nicht notwendig ist, ausschließlich werden durch das Aufbringen von Wasser auf das Türschauglas und den Türdichtring am Türschauglas sichtbarer Schaum und sich am und im Türdichtring befindender Schaum aufgelöst und weggespült.The advantages that can be achieved with the invention, in addition to foam elimination from the door inspection glass and/or in the inner drum, are that the foam is removed independently of the load quantity of a washing program. If it is necessary, the spin cycle is carried out at maximum speed in order to free the door inspection glass from laundry lying on it. Subsequently, or if the spin cycle is not necessary, only foam visible on the door sight glass and foam located on and in the door seal ring are dissolved and washed away by applying water to the door sight glass and the door sealing ring.

Erfindungsgemäß ist in dem Verfahren folgender Schritt vorgesehen: Durchführen eines Schleudervorgangs im Anschluss an die Spülphase und vor dem Aufbringen des Wassers auf das Türschauglas und den Türdichtring mit einer Maximaldrehzahl in Abhängigkeit des angewählten Waschprogrammes.According to the invention, the following step is provided in the method: Carrying out a spin cycle after the rinsing phase and before applying the water to the door sight glass and the door sealing ring with a maximum speed depending on the selected washing program.

Durch den erfindungsgemäßen Schritt wird die Wäsche in Abhängigkeit vom angewählten Waschprogramm aus dem Bereich des Türschauglases und dem Türdichtring hinaus verdrängt, damit das auf das Türschauglas und den Türdichtring aufgebrachte Wasser den Schaum berühren kann und nicht von der sich in der Trommel befindenden Wäsche aufgesaugt wird.The step according to the invention pushes the laundry out of the area of the door inspection glass and the door sealing ring, depending on the selected washing program, so that the water applied to the door inspection glass and the door sealing ring can touch the foam and is not sucked up by the laundry in the drum.

In einer bevorzugten Ausführungsform weist das Verfahren folgende Schritte auf: Ermitteln, ob das Waschprogramm eine Schwellbeladungsmenge aufweist, die eine vorbestimmte Maximalbeladungsmenge überschreitet und/oder ein Voluminös-Wäsche-Waschprogramm ist und Durchführen des Schleudervorgangs im Anschluss an die Spülphase und vor dem Aufbringen des Wassers auf das Türschauglas und den Türdichtring mit einer Maximaldrehzahl in Abhängigkeit davon, ob das Waschprogramm die Schwellbeladungsmenge aufweist, die die die vorbestimmte Maximalbeladungsmenge überschreitet, und/oder das Voluminös-Wäsche-Waschprogramm ist.In a preferred embodiment, the method has the following steps: determining whether the wash program has a threshold load that exceeds a predetermined maximum load and/or is a voluminous laundry wash program and carrying out the spin cycle after the rinsing phase and before applying the water on the door sight glass and the door sealing ring at a maximum speed depending on whether the wash program has the threshold load amount that exceeds the predetermined maximum load amount and/or is the bulky laundry wash program.

In einer bevorzugten Ausführungsform ist die vorbestimmte Maximalbeladungsmenge eine Beladungsmenge von 2 kg. Die Maximaldrehzahl beträgt bevorzugt 600 min-1, bevorzugter 550 min-1. Es wurde festgestellt, dass eine Durchführung des Schleudervorgangs mit der Maximaldrehzahl nur notwendig ist, wenn das Waschprogramm eine Schwellbeladungsmenge aufweist, die die vorbestimmte Maximalbeladungsmenge überschreitet und/oder ein Voluminös-Wäsche-Waschprogramm ist. Ein Voluminös-Wäsche-Waschprogramm ist ein Waschprogramm zum Waschen von voluminöser Wäsche wie Kopfkissen, Daunen und/oder Frottierware.In a preferred embodiment, the predetermined maximum load is a load of 2 kg. The maximum speed is preferably 600 min -1, more preferably 550 min -1. It has been found that it is only necessary to carry out the spin cycle at the maximum speed if the wash program has a threshold load that exceeds the predetermined maximum load and/or is a bulky laundry wash program. A bulky laundry washing program is a washing program for washing bulky laundry such as pillows, down and/or terry goods.

In einer bevorzugten Ausführungsform wird bei Ermittlung, dass das Waschprogramm eine Schwellbeladungsmenge aufweist, die gleich oder kleiner als die vorbestimmte Maximalbeladungsmenge ist und ein von dem Voluminös-Wäsche-Waschprogramm verschiedenes Waschprogramm ist, direkt im Anschluss an die Spülphase Wasser auf das Türschauglas und/oder den Türdichtring aufgebracht, um das Türschauglas und den Türdichtring zu spülen. D.h., wenn das Waschprogramm die Schwellbeladungsmenge aufweist, die kleiner oder gleich der vorbestimmten Maximalbeladungsmenge ist, und ein von dem Voluminös-Wäsche-Waschprogramm verschiedenes Waschprogramm ist, wird der Schleudervorgang mit der Maximaldrehzahl nicht durchgeführt, sondern wird vielmehr direkt im Anschluss auf die Spülphase Wasser auf das Türschauglas und den Türdichtring aufgebracht, um diese zu spülen und somit von Schaum zu befreien. Die Schwellbeladungsmenge ist im Sinne der Erfindung eine maximal zulässige Beladungsmenge jedes einzelnen Waschprogramms. Die Schwellbeladungsmenge kann von Waschprogramm zu Waschprogramm verschieden sein und ist in der Waschmaschine jeweils jedem Waschprogramm zugeordnet hinterlegt.In a preferred embodiment, when it is determined that the wash program has a threshold load that is equal to or less than the predetermined maximum load and is a wash program that differs from the bulky laundry wash program, water is applied to the door sight glass and/or directly after the rinsing phase applied to the door seal to flush the door sight glass and door seal. That is, if the wash program has the threshold load amount that is less than or equal to the predetermined maximum load amount and is a different wash program from the bulky laundry wash program, the spin process is not carried out at the maximum speed, but rather is water directly after the rinsing phase applied to the door sight glass and the door sealing ring in order to flush them and thus free them from foam. the Within the meaning of the invention, the threshold loading quantity is a maximum permissible loading quantity for each individual wash program. The threshold loading quantity can vary from washing program to washing program and is assigned to each washing program and stored in the washing machine.

Bevorzugt wird bei Ermittlung, dass das Waschprogramm eine Schwellbeladungsmenge aufweist, die die vorbestimmte Maximalbeladungsmenge überschreitet, und/oder das Voluminös-Wäsche-Waschprogramm ist, der Schleudervorgang mit der Maximaldrehzahl durchgeführt und anschließend Wasser auf das Türschauglas und/oder den Türdichtring aufgebracht, um das Türschauglas und den Türdichtring zu spülen. Das bedeutet, wenn das Waschprogramm die Schwellbeladungsmenge aufweist, die die vorbestimmte Maximalbeladungsmenge überschreitet, und/oder ein Voluminös-Wäsche-Waschprogramm ist, wird der Schleudervorgang mit der Maximaldrehzahl zwischen der Spülphase und dem Aufbringen des Wassers auf das Türschauglas und den Türdichtring durchgeführt. Zweck des Schleudervorgangs im Anschluss an die Spülphase und vor dem Aufbringen des Wassers auf das Türschauglas und den Türdichtring mit einer Maximaldrehzahl ist, die Wäsche möglichst vom Türschauglas zu verdrängen und den Schaum freizulegen, welcher sich in der Regel durch das Schleudern nicht ändert. Nach Freilegen des Schaums werden das Türschauglas und der Türdichtring durch Aufbringen von Wasser gespült.If it is determined that the wash program has a threshold load that exceeds the predetermined maximum load and/or is the bulky laundry wash program, the spin process is preferably carried out at the maximum speed and then water is applied to the door inspection glass and/or the door sealing ring in order to Rinse the door sight glass and the door sealing ring. This means that if the wash program has the threshold load amount that exceeds the predetermined maximum load amount and/or is a bulky laundry wash program, the spin cycle is carried out at maximum speed between the rinsing phase and the application of the water to the door sight glass and the door sealing ring. The purpose of the spinning process after the rinsing phase and before applying the water to the door sight glass and the door sealing ring at a maximum speed is to displace the laundry from the door sight glass as far as possible and to expose the foam, which usually does not change with the spin cycle. After exposing the foam, the door sight glass and the door sealing ring are rinsed by applying water.

Das Türschauglas und der Türdichtring werden mit Wasser gespült, sodass der Schaum, der sich dort ansammelt, weggespült wird, ohne dass zusätzliche Mittel benötigt werden. Vielmehr können bereits vorhandene Komponenten der Waschmaschine genutzt werden, um den Schaum von dem Türschauglas und dem Türdichtring zu entfernen. Das Aufbringen von Wasser umfasst vorzugsweise ein Besprühen oder Bespritzen zumindest eines Teils des Türschauglases und des Türdichtrings. Das Aufbringen des Wassers kann an einer Stelle oder mehreren Stellen des Türschauglases und des Türdichtrings erfolgen. In einer bevorzugten Ausführungsform wird das Wasser über eine Türschauglaseinspülung auf das Türschauglas und den Türdichtring aufgebracht. Dadurch kann das Wasser direkt auf das Türschauglas oder den Türdichtring aufgebracht werden. Beispielsweise weist die Türschauglaseinspülung eine Düse auf, die das Wasser auf das Türschauglas und den Türdichtring spritzt oder sprüht.The door sight glass and door seal ring are flushed with water, so the foam that collects there is washed away without the need for additional agents. Rather, already existing components of the washing machine can be used to remove the foam from the door sight glass and the door sealing ring. The application of water preferably includes spraying or splattering at least part of the door sight glass and the door sealing ring. The water can be applied to one or more points of the door sight glass and the door sealing ring. In a preferred embodiment, the water is applied to the door sight glass and the door sealing ring by flushing the door sight glass. This allows the water to be applied directly to the door sight glass or door seal. For example, the door sight glass flushing device has a nozzle that squirts or sprays the water onto the door sight glass and the door sealing ring.

Wenn der Schleudervorgang durchgeführt wird, wird das Verfahren diesbezüglich bevorzugt folgendermaßen durchgeführt: Bevorzugt weist das Verfahren folgende Schritte Sensieren einer Beladungsmenge an Wäsche in der Trommel in einer Anfangsphase des Waschprogramms und lineares oder stufenweises Einstellen der Maximaldrehzahl während des Schleudervorgangs in Abhängigkeit von der sensierten Beladungsmenge auf. Alternativ oder zusätzlich weist das Verfahren folgende Schritte Sensieren von Schaum in der Trommel am Ende und/oder im Anschluss an die Spülphase und lineares oder stufenweises Einstellen der Maximaldrehzahl während des Schleudervorgangs in Abhängigkeit von der Schaumsensierung auf. D.h., der Schleudervorgang kann in Abhängigkeit von der sensierten Beladungsmenge und/oder der Schaumsensierung geregelt und/oder gesteuert werden. Bei einer relativ niedrigen sensierten Beladungsmenge wird bevorzugt die Maximaldrehzahl des Schleudervorgangs linear eingestellt. Bei einer relativ hohen sensierten Beladungsmenge und/oder Schaumsensierung wird bevorzugt die Drehzahl des Schleudervorgangs stufenweise auf die Maximaldrehzahl des Schleudervorgangs erhöht. Die Maximaldrehzahl beträgt bevorzugt 600 min-1, bevorzugter 550 min-1. Bei dieser Maximaldrehzahl wird vermieden, dass noch mehr Schaum geschlagen wird, und zudem wird die Wäsche an die Trommelwand gedrückt, fällt aber bei Trommelstillstand nicht wieder zusammen. Eine Schaumsensierung ist beispielsweise aus der DE19839896A1 oder DE4104151A1 bekannt.If the spinning process is carried out, the method is preferably carried out as follows in this respect: The method preferably has the following steps: sensing a load of laundry in the drum in an initial phase of the washing program and linear or stepwise setting of the maximum speed during the spinning process as a function of the sensed load . Alternatively or additionally, the method has the following steps: sensing foam in the drum at the end and/or following the rinsing phase and linear or gradual adjustment of the maximum speed during the spin process depending on the foam sensing. This means that the centrifugal process can be regulated and/or controlled as a function of the sensed load quantity and/or the foam sense. In the case of a relatively low sensed load quantity, the maximum speed of the spinning process is preferably set linearly. In the case of a relatively high sensed load quantity and/or foam sensing, the speed of the spinning process is preferably increased in stages to the maximum speed of the spinning process. The maximum speed is preferably 600 min -1, more preferably 550 min -1. At this maximum speed, it is avoided that more foam is whipped up, and the laundry is also pressed against the drum wall, but does not collapse again when the drum stops. A foam sensing is for example from the DE19839896A1 or DE4104151A1 known.

Bevorzugt ist die Trommel im Stillstand, während das Wasser auf das Türschauglas und/oder den Türdichtring aufgebracht wird, um das Türschauglas und den Türdichtring zu spülen. In einer bevorzugten Ausführungsform ist eine Drehzahl der Trommel während des Aufbringens des Wassers auf das Türschauglas und den Türdichtring daher 0 min-1. D.h., die Trommel wird während des Aufbringens von Wasser auf das Türschauglas und den Türdichtring nicht gedreht. Dadurch kann das aufgebrachte Wasser den Schaum in Richtung Abfluss mitnehmen.Preferably, the drum is stationary while the water is applied to the door sight glass and/or door seal to rinse the door sight glass and door seal. In a preferred embodiment, a speed of rotation of the drum during the application of the water to the door sight glass and the door sealing ring is therefore 0 min -1 . That is, the drum is not rotated during the application of water to the door sight glass and door seal. This allows the applied water to carry the foam towards the drain.

In einer bevorzugten Ausführungsform wird im Anschluss an die Spülphase während des Schleudervorgangs bei der Maximaldrehzahl und/oder während des Aufbringens von Wasser auf das Türschauglas und den Türdichtring eine Ablaufeinrichtung zum Herausführen des Wassers aus dem Laugenbehälter dauerhaft aktiviert. Dadurch wird das Wasser samt Schaum aus dem Laugenbehälter entfernt und kann die Wäsche nicht kontaminieren.In a preferred embodiment, after the rinsing phase, during the spin cycle at maximum speed and/or while water is being applied to the door sight glass and the door sealing ring, a drainage device for draining the water out of the tub is permanently activated. This removes the water and foam from the tub and prevents it from contaminating the laundry.

Alternativ bevorzugt wird im Anschluss an die Spülphase während des Schleudervorgangs bei der Maximaldrehzahl und/oder während des Aufbringens von Wasser auf das Türschauglas und den Türdichtring die Ablaufeinrichtung zum Herausführen des Wassers aus dem Laugenbehälter aktiviert, wenn ein Druck in dem Laugenbehälter sensiert wird, der größer als ein vorbestimmter Schwellenwert ist. Der vorbestimme Schwellenwert ist bevorzugt derart gewählt, dass der sensierte Druck nicht höher als einem Wasserstand entspricht, der an einer Unterkante der Trommel liegt. Damit soll verhindert werden, dass der Schaum nochmals in einen für einen Nutzer der Waschmaschine sichtbaren Bereich wie dem Türschauglas aufsteigen kann.Alternatively, preferably, following the rinsing phase during the spin cycle at maximum speed and/or while water is being applied to the door sight glass and the door sealing ring, the drainage device for draining the water out of the tub is activated if a pressure in the tub is sensed that is greater than a predetermined threshold. The predetermined threshold is preferably chosen such that the sensed pressure corresponds to no higher than a water level that is at a bottom edge of the drum. This is intended to prevent the foam from being able to rise again into an area that is visible to a user of the washing machine, such as the door inspection glass.

In einer bevorzugten Ausführungsform entspricht eine Menge an Wasser, das auf das Türschauglas und den Türdichtring aufgebracht wird, um das Türschauglas und den Türdichtring zu spülen, einer vorbestimmten Wassermenge, die vom durchgeführten Waschprogramm abhängt. Dies kann erforderlich sein, wenn eine bestimmte Gesamtwassermenge im Waschprogramm nicht überschritten werden soll. Alternativ oder zusätzlich hängt eine Menge an Wasser, das auf das Türschauglas und den Türdichtring aufgebracht wird, um das Türschauglas und den Türdichtring zu spülen, von der sensierten Beladungsmenge, dem sensierten Schaum und/oder einer Menge eines automatisch dosierten Waschmittels ab, das während des Waschprogramms dem Laugenbehälter zugeführt wird. Die auf das Türschauglas und den Türdichtring aufgebrachte Wassermenge ist daher an den Waschprozess, an ein tatsächliches Schaumaufkommen und/oder an eine automatische Waschmitteldosierung angepasst. Dadurch wird sichergestellt, dass der Schaum auch tatsächlich weggespült werden kann und eine optimale Wassermenge eingesetzt wird, d.h. weder zu viel noch zu wenig Wasser zum Spülen eingesetzt wird.In a preferred embodiment, an amount of water applied to the door sight glass and the door seal to flush the door sight glass and the door seal corresponds to a predetermined amount of water carried out by the washing program depends. This may be necessary if a specific total amount of water in the washing program should not be exceeded. Alternatively or additionally, an amount of water applied to the door sight glass and door sealing ring to rinse the door sight glass and door sealing ring depends on the sensed load amount, sensed foam and/or an amount of an automatically dosed detergent that is used during the Washing program is fed to the tub. The amount of water applied to the door sight glass and the door sealing ring is therefore adapted to the washing process, to an actual amount of foam and/or to automatic detergent dosing. This ensures that the foam can actually be flushed away and that an optimal amount of water is used, ie neither too much nor too little water is used for rinsing.

Vorzugsweise weist das angewählte Waschprogramm folgenden Ablauf auf: Zuerst wird die Beladungsmenge in einer Erfassungsphase mittels eines Massenträgheitsverfahrens oder einer Gewichtsmessung ermittelt. Anschließend wird eine Waschphase mit Zuführen von Wasser und optional Waschmittel in den Laugenbehälter, Aufheizen des Wassers auf eine vorbestimmte Waschtemperatur, Waschen der Wäsche und Abpumpen des Wassers aus dem Laugenbehälter mittels der Ablaufeinrichtung durchgeführt. Dann wird eine Spülphase mit einem Spülabschnitt oder mehreren Spülabschnitten, jeweils aufweisend ein Zuführen von Wasser in den Laugenbehälter und Abpumpen des Wassers aus dem Laugenbehälter mittels der Ablaufeinrichtung, durchgeführt. Anschließend wird der Schleudervorgang mit der Maximaldrehzahl in Abhängigkeit vom angewählten Waschprogramm durchgeführt. Dann wird das Aufbringen von Wasser auf das Türschauglas und den Türdichtring durchgeführt, um diese zu spülen. Anschließend wird eine Endschleuderphase mit Schleudern der Wäsche bis zum Anlegen an den Trommelmantel unter Abpumpen von Wasser aus dem Laugenbehälter mittels der Ablaufeinrichtung durchgeführt.The selected wash program preferably has the following sequence: First, the load quantity is determined in a detection phase using a mass inertia method or a weight measurement. A washing phase is then carried out with supplying water and optionally detergent into the tub, heating the water to a predetermined washing temperature, washing the laundry and pumping the water out of the tub using the drain device. A rinsing phase is then carried out with a rinsing section or a plurality of rinsing sections, each comprising feeding water into the tub and pumping the water out of the tub by means of the drain device. The spin cycle is then carried out at the maximum speed depending on the wash program selected. Then, application of water to the door sight glass and the door seal ring is performed to rinse them. A final spin phase is then carried out with the laundry being spun until it comes into contact with the drum casing while water is pumped out of the tub using the drain device.

Die Erfindung betrifft ferner eine Waschmaschine mit einem in einem Gehäuse angeordneten Laugenbehälter, in dem eine Trommel drehbar gelagert ist, einer frontseitig am Gehäuse angeordneten Beschickungsöffnung, die mit einer ein Türschauglas aufweisenden Tür verschließbar ist, einem sich zwischen dem Gehäuse und dem Laugenbehälter um die Beschickungsöffnung erstreckenden Türdichtring und einer Regel- oder Steuereinrichtung, die eingerichtet ist, ein Verfahren nach einer oder mehreren der beschriebenen Ausführungsformen zu regeln oder zu steuern.The invention also relates to a washing machine with a suds container arranged in a housing, in which a drum is rotatably mounted, a loading opening arranged on the front of the housing, which can be closed with a door having a door inspection glass, a suds container located between the housing and the suds container around the loading opening extending door sealing ring and a regulating or control device which is set up to regulate or control a method according to one or more of the described embodiments.

Weiterhin weist die Waschmaschine vorzugsweise eine Türschauglaseinspülung auf. Die Türschauglaseinspülung ist vorzugsweise in und/oder an dem Türdichtring vorgesehen. Beispielsweise ist die Türschauglaseinspülung eine Einsprüheinrichtung wie eine Düse und/oder eine Öffnung in einem als Faltenbalgdichtung oder als elastische Manschette ausgebildeten Türdichtring.Furthermore, the washing machine preferably has a door sight glass flushing system. The flushing of the door sight glass is preferably provided in and/or on the door sealing ring. For example, the flushing of the door sight glass is a spraying device like a nozzle and/or an opening in a door sealing ring designed as a bellows seal or as an elastic sleeve.

Bei der Waschmaschine kann es sich um eine in einem Privathaushalt oder gewerblich genutzte Waschmaschine handeln. Der Begriff "Waschmaschine" umfasst vorzugsweise einen Waschautomaten und/oder ein Kombigerät wie einen Waschtrockner.The washing machine can be a washing machine used in a private household or commercially. The term "washing machine" preferably includes a washing machine and/or a combination device such as a washer-dryer.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen rein schematisch dargestellt und wird nachfolgend näher beschrieben. Es zeigt schematisch

Fig. 1
ein Ablaufdiagramm eines erfindungsgemäßen Verfahrens.
An embodiment of the invention is shown purely schematically in the drawings and is described in more detail below. It shows schematically
1
a flowchart of a method according to the invention.

Fig. 1 zeigt schematisch ein Ablaufdiagramm eines erfindungsgemäßen Verfahrens. In Schritt 1 wird ein letzter Spülabschnitt einer Spülphase eines angewählten Waschprogramms durchgeführt. An den Schritt 1 schließt sich ein Schritt 2 an, in dem das erfindungsgemäße Verfahren startet. An den Schritt 2 schließt sich ein Schritt 3 an, der ein Ermitteln aufweist, ob das Waschprogramm eine Schwellbeladungsmenge aufweist, die eine vorbestimmte Maximalbeladungsmenge wie beispielsweise 2 kg überschreitet und/oder ein Voluminös-Wäsche-Waschprogramm ist. Wenn ja, d.h. wenn ermittelt wird, dass das Waschprogramm eine Schwellbeladungsmenge aufweist, die die vorbestimmte Maximalbeladungsmenge überschreitet und/oder ein Voluminös-Wäsche-Waschprogramm ist, dann schließt sich an den Schritt 3 ein Schritt 4 an, der ein Durchführen eines Schleudervorgangs mit einer Maximaldrehzahl von 600 min-1 aufweist, und an den Schritt 4 schließt sich ein Schritt 5 an. 1 schematically shows a flowchart of a method according to the invention. In step 1, a last rinsing section of a rinsing phase of a selected washing program is carried out. Step 1 is followed by step 2, in which the method according to the invention starts. Step 2 is followed by step 3, which includes determining whether the wash program has a threshold load that exceeds a predetermined maximum load, such as 2 kg, and/or is a bulky laundry wash program. If yes, ie if it is determined that the wash program has a threshold load that exceeds the predetermined maximum load and/or is a voluminous laundry wash program, then step 3 is followed by step 4, which involves performing a spin cycle with a Has a maximum speed of 600 min -1 , and step 4 is followed by a step 5.

Wenn im Schritt 3 ermittelt wird, dass das Waschprogramm eine Schwellbeladungsmenge aufweist, die kleiner oder gleich zu der vorbestimmten Maximalbeladungsmenge ist, und ein zu jedem Voluminös-Wäsche-Waschprogramm verschiedenes Waschprogramm ist, dann schließt sich an den Schritt 3 direkt der Schritt 5 an. Der Schritt 5 weist ein Aufbringen von Wasser auf ein Türschauglas und einen Türdichtring einer Waschmaschine auf, um diese zu spülen, wobei eine Trommel der Waschmaschine im Stillstand ist, während das Wasser auf das Türschauglas und/oder den Türdichtring aufgebracht wird. An den Schritt 5 schließt sich ein Schritt 6 an, der ein Endschleudern aufweist. Beim Endschleudern wird zum Entwässern von sich in der Trommel befindlicher Wäsche die Trommel mit einer gegenüber dem Schritt 4 erhöhten Drehzahl gedreht, bei der die Wäsche an einem Mantel der Trommel anliegt und das Wasser aus der Wäsche aufgrund von Zentrifugalkraft aus dem Gewebe vom Trommelinneren in den Laugenbehälter durch Öffnungen in der Trommel geschleudert wird.If it is determined in step 3 that the washing program has a threshold loading quantity that is less than or equal to the predetermined maximum loading quantity and is a different washing program for each bulky laundry washing program, then step 3 is followed directly by step 5. Step 5 comprises applying water to a door sight glass and a door seal of a washing machine to rinse them, with a drum of the washing machine standing still while the water is applied to the door sight glass and/or the door seal. Step 5 is followed by step 6, which has a final spin. During the final spin, to drain the laundry in the drum, the drum is rotated at a higher speed than in step 4, at which the laundry rests against a casing of the drum and the water from the laundry due to centrifugal force from the fabric from the inside of the drum into the Suds container is thrown through openings in the drum.

Claims (10)

  1. Method for operating a washing machine having a suds container arranged in a housing, in which container a drum is rotatably mounted, a loading opening arranged on the front of the housing that can be closed by means of a door having a door inspection glass, a door sealing ring which extends between the housing and the suds container around the loading opening, and an open-loop and/or closed-loop control device, the method comprising carrying out a selected washing programme which comprises a rinsing phase and in which water is applied to the door inspection glass and the door sealing ring following the rinsing phase in order to rinse the door inspection glass and the door sealing ring, characterised by the following step: carrying out a spinning process following the rinsing phase and before applying the water to the door inspection glass and the door sealing ring at a maximum rotational speed on the basis of the selected washing programme.
  2. Method according to claim 1, characterised by the following steps
    - determining whether the selected washing programme has a threshold load amount that exceeds a predetermined maximum load amount and/or is a voluminous laundry washing programme and
    - carrying out the spinning process following the rinsing phase and before applying the water to the door inspection glass and the door sealing ring at the maximum rotational speed on the basis of whether the washing programme has the threshold load amount that exceeds the predetermined maximum load amount and/or is the voluminous laundry washing programme.
  3. Method according to claim 2, characterised in that
    - if it is determined that the washing programme has a threshold load amount that is equal to or smaller than the predetermined maximum load amount and is a washing programme that is different from the voluminous laundry washing programme, water is applied to the door inspection glass and the door sealing ring immediately following the rinsing phase in order to rinse the door inspection glass and the door sealing ring, and
    - if it is determined that the washing programme has a threshold load amount that exceeds the predetermined maximum load amount and/or is the voluminous laundry washing programme, the spinning process is carried out at the maximum rotational speed following the rinsing phase and then water is applied to the door inspection glass and/or the door sealing ring in order to rinse the door inspection glass and the door sealing ring.
  4. Method according to any of the preceding claims, characterised by sensing a load amount of laundry in the drum in an initial phase of the washing programme and a linear or step-by-step adjustment of the maximum rotational speed during the spinning process on the basis of the sensed load amount.
  5. Method according to any of the preceding claims, characterised by sensing foam in the drum at the end and/or following the rinsing phase and a linear or step-by-step adjustment of the maximum rotational speed during the spinning process on the basis of the sensed foam.
  6. Method according to any of the preceding claims, characterised in that the drum is at a standstill while the water is applied to the door inspection glass and the door sealing ring in order to rinse the door inspection glass and the door sealing ring.
  7. Method according to any of the preceding claims, characterised in that, following the rinsing phase and during the spinning process, at the maximum rotational speed and/or during the application of water to the door inspection glass and the door sealing ring, a discharge device for conducting the water out of the suds container is permanently activated.
  8. Method according to any of the preceding claims 1 to 6, characterised in that, following the rinsing phase and during the spinning process, at the maximum rotational speed and/or during the application of water to the door inspection glass and/or the door sealing ring, a discharge device for conducting the water out of the suds container is activated when a pressure is sensed in the suds container that is greater than a predetermined threshold.
  9. Method according to any of the preceding claims, characterised in that an amount of water which is applied to the door inspection glass and the door sealing ring in order to rinse the door inspection glass and the door sealing ring corresponds to a predetermined amount of water which depends on the selected washing programme and/or on the sensed load amount, the sensed foam and/or an amount of an automatically dosed detergent which is fed to the suds container during the washing programme.
  10. Washing machine having a suds container arranged in a housing, in which container a drum is rotatably mounted, a loading opening arranged at the front of the housing that can be closed by means of a door having a door inspection glass, a door sealing ring that extends between the housing and the suds container around the loading opening, and an open-loop and/or closed-loop control device that is configured to control a method according to any of claims 1 to 9.
EP19708446.0A 2018-03-12 2019-02-26 Method for operating a washing machine, and washing machine Active EP3765664B1 (en)

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US4987627A (en) * 1990-01-05 1991-01-29 Whirlpool Corporation High performance washing process for vertical axis automatic washer
DE4104151A1 (en) 1991-02-12 1992-08-13 Miele & Cie Laundry treatment machine with program control - and foam sensing device with switching mechanism to switch on heating device when foam is detected
KR100198568B1 (en) * 1997-02-14 1999-06-15 구자홍 The drum washing machine of a bubble preventing apparatus and its method
DE19731667A1 (en) 1997-07-23 1999-01-28 Aeg Hausgeraete Gmbh Front-loading drum washing machine
DE19839896A1 (en) 1998-09-02 2000-03-09 Miele & Cie Washing machine with a device for determining the weight of the laundry
JP2006110146A (en) * 2004-10-15 2006-04-27 Toshiba Corp Drum type washing machine
KR101521175B1 (en) * 2008-04-22 2015-05-20 삼성전자 주식회사 Washing machine and method of controlling the same
JP2013085850A (en) * 2011-10-21 2013-05-13 Hitachi Appliances Inc Drum-type washing machine
WO2013091288A1 (en) 2011-12-19 2013-06-27 海尔集团公司 Device and method for cleaning observation window and window spacer sealing ring, and washing machine applying the same
KR20140019553A (en) * 2012-08-06 2014-02-17 동부대우전자 주식회사 Method and device for preventing bubble back flow of drum type washing machine
DE102016100577A1 (en) 2016-01-14 2017-07-20 Miele & Cie. Kg Method of operating a washing machine and washing machine
KR102512212B1 (en) * 2016-02-23 2023-03-22 삼성전자주식회사 Washing apparatus, and control method for the same
AU2017203834B2 (en) * 2016-06-08 2019-10-03 Lg Electronics Inc. Laundry treatment apparatus and method of controlling the same
CN107604585B (en) 2017-10-09 2019-03-15 珠海格力电器股份有限公司 A kind of water inflowing box, roller washing machine and its water inlet spraying control method thereof

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DE102018105667A1 (en) 2019-09-12
KR20200130408A (en) 2020-11-18
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US11655578B2 (en) 2023-05-23
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